shell.run("rm startup.lua")
shell.run("rm vector.lua")
shell.run("rm hub.lua")
shell.run("rm screen_buffer.lua")
shell.run("wget https://gitee.com/jvn/file_server/raw/master/ship_ctrl2/startup.lua startup.lua")
shell.run("wget https://gitee.com/jvn/file_server/raw/master/ship_ctrl2/screen_buffer.lua screen_buffer.lua")
shell.run("wget https://gitee.com/jvn/file_server/raw/master/ship_ctrl2/hub.lua hub.lua")
shell.run("wget https://gitee.com/jvn/file_server/raw/master/ship_ctrl2/vector.lua vector.lua")